US6401824B1 - Well completion convertible float shoe/collar - Google Patents
Well completion convertible float shoe/collar Download PDFInfo
- Publication number
- US6401824B1 US6401824B1 US09/524,117 US52411700A US6401824B1 US 6401824 B1 US6401824 B1 US 6401824B1 US 52411700 A US52411700 A US 52411700A US 6401824 B1 US6401824 B1 US 6401824B1
- Authority
- US
- United States
- Prior art keywords
- tubular member
- flapper
- inner tubular
- outer tubular
- fluid flow
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Lifetime
Links
- 239000012530 fluid Substances 0.000 claims abstract description 45
- 230000004323 axial length Effects 0.000 claims 3
- 238000010008 shearing Methods 0.000 claims 2
- 239000004568 cement Substances 0.000 description 17
- 230000004913 activation Effects 0.000 description 5
- 238000009826 distribution Methods 0.000 description 5
- 238000005086 pumping Methods 0.000 description 5
- 238000005553 drilling Methods 0.000 description 4
- 238000005520 cutting process Methods 0.000 description 3
- 239000011435 rock Substances 0.000 description 3
- 230000009471 action Effects 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 230000008569 process Effects 0.000 description 2
- 239000004215 Carbon black (E152) Substances 0.000 description 1
- 230000003213 activating effect Effects 0.000 description 1
- 229930195733 hydrocarbon Natural products 0.000 description 1
- 150000002430 hydrocarbons Chemical class 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 230000007246 mechanism Effects 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 239000003129 oil well Substances 0.000 description 1
- 238000005406 washing Methods 0.000 description 1
Images
Classifications
-
- E—FIXED CONSTRUCTIONS
- E21—EARTH OR ROCK DRILLING; MINING
- E21B—EARTH OR ROCK DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS
- E21B21/00—Methods or apparatus for flushing boreholes, e.g. by use of exhaust air from motor
- E21B21/10—Valve arrangements in drilling-fluid circulation systems
-
- E—FIXED CONSTRUCTIONS
- E21—EARTH OR ROCK DRILLING; MINING
- E21B—EARTH OR ROCK DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS
- E21B17/00—Drilling rods or pipes; Flexible drill strings; Kellies; Drill collars; Sucker rods; Cables; Casings; Tubings
- E21B17/14—Casing shoes for the protection of the bottom of the casing
-
- E—FIXED CONSTRUCTIONS
- E21—EARTH OR ROCK DRILLING; MINING
- E21B—EARTH OR ROCK DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS
- E21B34/00—Valve arrangements for boreholes or wells
- E21B34/06—Valve arrangements for boreholes or wells in wells
- E21B34/14—Valve arrangements for boreholes or wells in wells operated by movement of tools, e.g. sleeve valves operated by pistons or wire line tools
- E21B34/142—Valve arrangements for boreholes or wells in wells operated by movement of tools, e.g. sleeve valves operated by pistons or wire line tools unsupported or free-falling elements, e.g. balls, plugs, darts or pistons
Definitions
- This invention relates generally to apparatus for use in well completions in wells where it is undesirable to put excess pressure on the well bore caused by lowering the casing into the well bore.
- one or more casing strings are lowered into the hole and are anchored therein by a column of cement placed in the annulus between the casing string and the wall of the borehole. It has become conventional practice to fill the casing string with heavy drilling fluid or mud which prevents the increasing subterranean pressure from crushing inwardly, or collapsing, the casing string as it is lowered, or floated, into the well bore.
- a wiper plug is launched into the casing string and oil well cement is added to the string above the wiper plug.
- Pressure pumping apparatus at the surface is used to pump the mud, and then the cement out of the lower end of the string and past a float shoe, or well tool having a back pressure valve, at its lower end and into the casing/well bore annulus.
- a float shoe or well tool having a back pressure valve, at its lower end and into the casing/well bore annulus.
- this device is used interiorly to the length of a full casing string, it is referred to as a float collar.
- the difference in the use of this type of device as a shoe or a collar is merely whether it is threaded to the casing on one end (shoe), or on both ends (collar).
- Some float shoes having mud jets, or directed openings, facing downwardly have been used for assisting lowering of casing into place by providing downwardly directed mud jets during the casing run in to assist circulating out any rock “cuttings” present in the uncased section of borehole.
- the downwardly facing jets assist in moving any remaining rock “cuttings” in the well bore to be circulated out of the well via the annulus between the casing and borehole wall during the run in operation.
- Some such tools used as float shoes have had upwardly facing fluid ports or jets to assist in the distribution of cement into the borehole/casing annulus once the tool is in place.
- No known float shoes having both types of fluid ports or jets have been used.
- one or more back pressure valves are positioned by cementing them into a short piece of pipe threaded to the end (when used as a shoe) or to a section between casing lengths (when used as a collar) of the casing string.
- These check valves prevent the re-entry of cement or mud interiorly to the casing during the run in and cementing operation.
- a float shoe or collar of this type can have other possible valve configurations.
- Such valves can be configured to only act as check valves when “activated” such as by running in an activation tool or pumping an activation tool or an obscuration ball down the casing string from the surface.
- Downwardly facing ports or jets are useful during casing run in. Upwardly facing jets promote the equal circumferential distribution of cement when cementing takes place. The upwardly facing jets create turbulence in the casing/borehole annulus and this tends to promote desired circumferential distribution of cement about the annulus.
- the apparatus of the present invention comprises a float shoe (or which could be used as a collar) that incorporates a check valve, or a plurality of such valves, which can allow the casing to fill up from the bottom with well fluid (auto fill) during run in.
- a center outlet hole as well as both upwardly and downwardly facing jets.
- a tube inside the float shoe holds the flapper (or check) valve(s) mechanism open to allow fluid into the casing. This same tube also covers and closes a set of upwardly facing jets during run in. The downwardly facing jets are open to aid in washing the borehole wall during the casing run in or float in.
- an obscuration ball or a tool is pumped down the casing.
- the ball seats in the float shoe tube.
- the seated ball causes the float shoe tube to move downwardly inside the tool.
- the downward movement allows the check valve(s) (or flappers) to swing closed, thus activating the check valve(s).
- the tube shifts downwardly it closes and shuts off the downwardly facing jets and exposes, or opens, the upwardly facing jets to assist in cement distribution, during the cementing operation, to all sides of the casing.
- FIG. 1 is a schematic side view in section of the apparatus of one embodiment of the invention (shoe form) in place in a short section of pipe threaded on its upper end to fit the casing string.
- FIG. 2 is a schematic side view in sections of a portion of the apparatus of FIG. 1 with the internal tube in its upward position.
- FIG. 3 is a schematic side view in section of the apparatus of FIG. 1 and 2 with the internal tube in its downward position and with the check valves closed or activated.
- FIG. 4 is a schematic side view in section of the apparatus of FIGS. 1, 2 and 3 with the check valves.
- FIG. 1 a well tool according to the invention is shown in a side view in section.
- the tool 14 is included and cemented n a short piece of pipe 21 threaded to fit the casing 11 sections on the casing lower end.
- FIG. 1 detail of the installation of the tool 14 is shown in the short pipe section 21 which is threaded to fit onto a well casing on the tools' upper end 14 A.
- Short pipe section 21 is provided with interior teeth or threads 26 and outer cylindrical body member 25 is held in place by cured cement or other attachment means 21 A prior to its attachment to the casing string being run in and cemented in place.
- a movable inner tubular member 27 is held in place with respect to outer member 25 by one or more shear pins 28 .
- the shear pins 28 are designed to shear when a desired lateral force is applied to them (as will be described) and to then permit downward it longitudinal movement of inner member 27 with respect to outer member 25 .
- the entire float shoe assembly 14 is constructed of such readily frangible material as to make it readily drillable by a tool lowered through the set casing.
- FIG. 1 an activation ball 23 is shown seated on a catcher/seat 23 A.
- ball 23 could be kept on the surface until it is desired to activate the apparatus of FIG. 1 .
- the bore 29 of inner member 27 may be fully open during the run in for auto fill.
- the outer member 25 is provided at its lower end with a plurality of downwardly facing jet openings 30 which are open in the position shown during the run in operation.
- the bottom opening 14 B of tool 14 may also be open during run in to allow fluid entry/exit through it and jets 30 into the borehole. Fluid pumped under pressure from the surface exits all the openings and, if desired, circulation may be maintained to “wash” rock cuttings left in the hole upwardly in the annulus 12 during this operation, assisted by the operation of downwardly facing fluid jets 30 .
- the outer member 25 is provided with a plurality of check valves 31 , shown as flapper valves 31 , which are held in their open or unactivated position in the interior annulus 32 between inner member 27 and the outer member 25 in the run position.
- the outer member 25 and the pipe section 21 are also provided with upwardly facing j et openings 33 and 33 A which are initially blocked in the run in position as shown in FIG. 1 .
- FIG. 2 shows the apparatus in the auto fill up mode (or run in mode) with bore 29 fully open to fluid flow and fluid jets 30 and bottom opening 14 B also fully open.
- FIG. 4 shows activation ball 23 caught on a catcher portion 35 of inner member 27 at its lower end and with the member 27 released to move, having sheared off the shear pins 28 of FIG. 1 forming a movable integral piston which has moved downwardly until caught on a shoulder 38 of outer member 25 at its lower end.
- the piston formed by movable inner member 27 has blocked off downwardly facing jets 30 and also the lower opening 14 B of the shoe 14 .
- valves 31 are still open, being held there after passage of piston assembly member 27 by fluid pressure from above.
- This motion of member 27 has also uncovered the upwardly facing jets 33 A of member 25 allowing cement to be exited and distributed to the annulus between the casing and borehole wall, equally about all exterior sides of casing string 11 .
- valves 31 A brief release of the pumping pressure from the surface allows valves 31 to close and seat, thus preventing the cement from “u tubing” or “flowing” back into the casing between pump strokes. Valves 31 , when activated, thus act as check valves for this purpose.
- This arrangement of the apparatus of the invention provides an optimal jetting action during run in, which is switched over or converted into an optimal jetting action for cement distribution, automatically upon activation of the downhole check valves.
- the system is safe and economical and very reliable.
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- Engineering & Computer Science (AREA)
- Life Sciences & Earth Sciences (AREA)
- Geology (AREA)
- Mining & Mineral Resources (AREA)
- Physics & Mathematics (AREA)
- Environmental & Geological Engineering (AREA)
- Fluid Mechanics (AREA)
- General Life Sciences & Earth Sciences (AREA)
- Geochemistry & Mineralogy (AREA)
- Mechanical Engineering (AREA)
- Earth Drilling (AREA)
- Consolidation Of Soil By Introduction Of Solidifying Substances Into Soil (AREA)
- Level Indicators Using A Float (AREA)
- Revetment (AREA)
- Rigid Pipes And Flexible Pipes (AREA)
- Infusion, Injection, And Reservoir Apparatuses (AREA)
- Treatment Of Water By Ion Exchange (AREA)
- Containers And Packaging Bodies Having A Special Means To Remove Contents (AREA)
- Nitrogen And Oxygen Or Sulfur-Condensed Heterocyclic Ring Systems (AREA)
- Coating Apparatus (AREA)
- Agricultural Chemicals And Associated Chemicals (AREA)
- Jet Pumps And Other Pumps (AREA)
- Lift Valve (AREA)
Priority Applications (18)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US09/524,117 US6401824B1 (en) | 2000-03-13 | 2000-03-13 | Well completion convertible float shoe/collar |
AU2001243557A AU2001243557A1 (en) | 2000-03-13 | 2001-03-12 | Multi-purpose float equipment and method |
MXPA02009002A MXPA02009002A (es) | 2000-03-13 | 2001-03-12 | Equipo y metodo de flotacion de propositos multiples. |
BRPI0109366-5A BRPI0109366B1 (pt) | 2000-03-13 | 2001-03-12 | Method for preparing floating equipment |
DK01916542.2T DK1264076T3 (da) | 2000-03-13 | 2001-03-12 | Multifunktionelt flydeudstyr og metode |
AT01916542T ATE454530T1 (de) | 2000-03-13 | 2001-03-12 | Mehrzweckschwimmeinrichtung und verfahren |
PT01916542T PT1264076E (pt) | 2000-03-13 | 2001-03-12 | Equipamento flutuante polivalente e método associado |
PCT/US2001/007690 WO2001069037A1 (en) | 2000-03-13 | 2001-03-12 | Multi-purpose float equipment and method |
CA2760857A CA2760857C (en) | 2000-03-13 | 2001-03-12 | Multi-purpose float equipment and method |
CA2403174A CA2403174C (en) | 2000-03-13 | 2001-03-12 | Multi-purpose float equipment and method |
ES01916542T ES2339844T3 (es) | 2000-03-13 | 2001-03-12 | Equipo flotante polivalente y metodo asociado. |
DE60141000T DE60141000D1 (de) | 2000-03-13 | 2001-03-12 | Mehrzweckschwimmeinrichtung und verfahren |
BR0109366-5A BR0109366A (pt) | 2000-03-13 | 2001-03-12 | Equipamento e método de flutuação de múltiplas finalidades |
EP09174158.7A EP2143875A3 (en) | 2000-03-13 | 2001-03-12 | Multi-purpose float |
EP01916542A EP1264076B1 (en) | 2000-03-13 | 2001-03-12 | Multi-purpose float equipment and method |
US09/982,618 US6679336B2 (en) | 2000-03-13 | 2001-10-17 | Multi-purpose float equipment and method |
NO20024349A NO20024349L (no) | 2000-03-13 | 2002-09-12 | F¶ringsrörutstyr for flere formÕl og fremgangsmÕte for bruk av dette |
CY20101100306T CY1109943T1 (el) | 2000-03-13 | 2010-03-31 | Εξοπλισμος και μεθοδος επιπλευσης πολλαπλων χρησεων |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US09/524,117 US6401824B1 (en) | 2000-03-13 | 2000-03-13 | Well completion convertible float shoe/collar |
Related Child Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
US09/982,618 Continuation-In-Part US6679336B2 (en) | 2000-03-13 | 2001-10-17 | Multi-purpose float equipment and method |
Publications (1)
Publication Number | Publication Date |
---|---|
US6401824B1 true US6401824B1 (en) | 2002-06-11 |
Family
ID=24087829
Family Applications (2)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
US09/524,117 Expired - Lifetime US6401824B1 (en) | 2000-03-13 | 2000-03-13 | Well completion convertible float shoe/collar |
US09/982,618 Expired - Lifetime US6679336B2 (en) | 2000-03-13 | 2001-10-17 | Multi-purpose float equipment and method |
Family Applications After (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
US09/982,618 Expired - Lifetime US6679336B2 (en) | 2000-03-13 | 2001-10-17 | Multi-purpose float equipment and method |
Country Status (14)
Country | Link |
---|---|
US (2) | US6401824B1 (pt) |
EP (2) | EP1264076B1 (pt) |
AT (1) | ATE454530T1 (pt) |
AU (1) | AU2001243557A1 (pt) |
BR (2) | BR0109366A (pt) |
CA (2) | CA2403174C (pt) |
CY (1) | CY1109943T1 (pt) |
DE (1) | DE60141000D1 (pt) |
DK (1) | DK1264076T3 (pt) |
ES (1) | ES2339844T3 (pt) |
MX (1) | MXPA02009002A (pt) |
NO (1) | NO20024349L (pt) |
PT (1) | PT1264076E (pt) |
WO (1) | WO2001069037A1 (pt) |
Cited By (28)
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US6684957B2 (en) * | 2001-09-11 | 2004-02-03 | Allamon Interests | Float collar |
US6712145B2 (en) * | 2001-09-11 | 2004-03-30 | Allamon Interests | Float collar |
US20060162939A1 (en) * | 2005-01-24 | 2006-07-27 | Vick James D Jr | Dual flapper safety valve |
US20060237186A1 (en) * | 2001-10-01 | 2006-10-26 | Mondelli Juan C | Cementing system for wellbores |
US20080110625A1 (en) * | 2006-11-15 | 2008-05-15 | Jeffrey James Arcement | Stress reduced cement shoe or collar body |
US20080196903A1 (en) * | 2005-07-23 | 2008-08-21 | Caledus Limited | Shoe for Wellbore Iining Tubing |
US20090188678A1 (en) * | 2008-01-29 | 2009-07-30 | Brooks Robert T | Float collar and method |
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US20110061872A1 (en) * | 2009-09-10 | 2011-03-17 | Bp Corporation North America Inc. | Systems and methods for circulating out a well bore influx in a dual gradient environment |
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US20110203794A1 (en) * | 2010-02-23 | 2011-08-25 | Tesco Corporation | Apparatus and Method for Cementing Liner |
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US11661817B2 (en) | 2021-04-28 | 2023-05-30 | Saudi Arabian Oil Company | Alternative casing cementing tool and methods thereof |
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Also Published As
Publication number | Publication date |
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WO2001069037A1 (en) | 2001-09-20 |
EP2143875A3 (en) | 2017-08-09 |
NO20024349L (no) | 2002-11-12 |
BR0109366A (pt) | 2004-06-22 |
CY1109943T1 (el) | 2014-09-10 |
PT1264076E (pt) | 2010-04-09 |
AU2001243557A1 (en) | 2001-09-24 |
US6679336B2 (en) | 2004-01-20 |
ATE454530T1 (de) | 2010-01-15 |
EP1264076A1 (en) | 2002-12-11 |
CA2403174A1 (en) | 2001-09-20 |
NO20024349D0 (no) | 2002-09-12 |
EP1264076B1 (en) | 2010-01-06 |
ES2339844T3 (es) | 2010-05-26 |
MXPA02009002A (es) | 2004-10-15 |
BRPI0109366B1 (pt) | 2017-06-20 |
CA2760857C (en) | 2017-02-21 |
EP1264076A4 (en) | 2005-01-12 |
DE60141000D1 (de) | 2010-02-25 |
EP2143875A2 (en) | 2010-01-13 |
US20020033262A1 (en) | 2002-03-21 |
CA2760857A1 (en) | 2001-09-20 |
DK1264076T3 (da) | 2010-05-17 |
CA2403174C (en) | 2012-02-21 |
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